[PATCH v3 1/2] dt-bindings: display: bridge: Add bindings for SN65DSI83/84/85

* [PATCH v3 1/2] dt-bindings: display: bridge: Add bindings for SN65DSI83/84/85
@ 2021-02-14 17:44 ` Jagan Teki
  0 siblings, 0 replies; 30+ messages in thread
From: Jagan Teki @ 2021-02-14 17:44 UTC (permalink / raw)
  To: Rob Herring, Andrzej Hajda, Neil Armstrong, Laurent Pinchart,
	Jonas Karlman, Jernej Skrabec, Sam Ravnborg
  Cc: dri-devel, linux-kernel, devicetree, linux-amarula, Jagan Teki,
	Marek Vasut

SN65DSI83/84/85 devices are MIPI DSI to LVDS based bridge
controller IC's from Texas Instruments.

SN65DSI83 - Single Channel DSI to Single-link LVDS bridge
SN65DSI84 - Single Channel DSI to Dual-link LVDS bridge
SN65DSI85 - Dual Channel DSI to Dual-link LVDS bridge

Right now the bridge driver is supporting Channel A with single
link, so dt-bindings documented according to it.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
Changes for v3:
- fixed Rob comments
- updated commit message and file name to support all chip variants 
Changes for v2:
- none

 .../bindings/display/bridge/ti,sn65dsi8x.yaml | 122 ++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/ti,sn65dsi8x.yaml

diff --git a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi8x.yaml b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi8x.yaml
new file mode 100644
index 000000000000..7f9f8cd6e786
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi8x.yaml
@@ -0,0 +1,122 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/ti,sn65dsi8x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI SN65DSI83/84/85 MIPI DSI to LVDS bridge bindings
+
+maintainers:
+  - Jagan Teki <jagan@amarulasolutions.com>
+
+description: |
+  SN65DSI83/84/85 devices are MIPI DSI to LVDS based bridge controller
+  IC's from Texas Instruments.
+
+  SN65DSI83 - Single Channel DSI to Single-link LVDS bridge
+  SN65DSI84 - Single Channel DSI to Dual-link LVDS bridge
+  SN65DSI85 - Dual Channel DSI to Dual-link LVDS bridge
+
+  Bridge decodes MIPI DSI 18bpp RGB666 and 240bpp RG888 packets and
+  converts the formatted video data stream to a FlatLink compatible
+  LVDS output operating at pixel clocks operating from 25 MHx to
+  154 MHz.
+
+properties:
+  compatible:
+    enum:
+      - ti,sn65dsi83
+      - ti,sn65dsi84
+
+  reg:
+    const: 0x2c
+
+  enable-gpios:
+    maxItems: 1
+    description: GPIO specifier for bridge enable pin (active high).
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: |
+          DSI Input. The remote endpoint phandle should be a
+          reference to a valid mipi_dsi_host device node.
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: |
+          Video port for LVDS output (panel or connector).
+
+    required:
+      - port@0
+      - port@1
+
+required:
+  - compatible
+  - reg
+  - enable-gpios
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       ports {
+           #address-cells = <1>;
+           #size-cells = <0>;
+
+           port@0 {
+               reg = <0>;
+               dsi_in: endpoint {
+                   remote-endpoint = <&ltdc_ep0_out>;
+               };
+           };
+
+           port@1 {
+               reg = <1>;
+               dsi_out: endpoint {
+                   remote-endpoint = <&bridge_in>;
+                   data-lanes = <0 1>;
+               };
+           };
+       };
+    };
+
+    i2c6 {
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       bridge@2c {
+           compatible = "ti,sn65dsi84";
+           reg = <0x2c>;
+           enable-gpios = <&gpiof 15 GPIO_ACTIVE_HIGH>;
+
+           ports {
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               port@0 {
+                   reg = <0>;
+                   bridge_in: endpoint {
+                        remote-endpoint = <&dsi_out>;
+                   };
+               };
+
+               port@1 {
+                   reg = <1>;
+                   bridge_out: endpoint {
+                        remote-endpoint = <&panel_in_lvds>;
+                   };
+               };
+           };
+       };
+    };
-- 
2.25.1


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